package gui.launch;

import java.io.File;

import javax.swing.filechooser.FileFilter;

public class PlayerFileFilter extends FileFilter {

	@Override
	public boolean accept(File f) {
		if (f.isDirectory()) {
            return true;
        }

        String extension = getExtension(f);
        if (extension != null && extension.equals("dat")) {
            return true;
        }

        return false;
    }

	@Override
	public String getDescription() {
		return "Players' list file (.dat)";
	}

	private String getExtension(File f) {
		String ext = null;
		String s = f.getName();
		int i = s.lastIndexOf('.');

		if (i > 0 && i < s.length() - 1) {
			ext = s.substring(i + 1).toLowerCase();
		}
		return ext;
	}
}
